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package javax.security.auth.message;
// for @see
import javax.security.auth.message.config.ClientAuthContext;
import javax.security.auth.message.config.ServerAuthContext;
import javax.security.auth.message.module.*;
/**
* This class defines a message authentication policy.
*
* <p> A ClientAuthContext uses this class to communicate
* (at module initialization time) request and response message protection
* policies to its ClientAuthModule objects.
* A ServerAuthContext uses this class to communicate
* request and response message protection
* policies to its ServerAuthModule objects.
*
* @version %I%, %G%
* @see ClientAuthContext
* @see ServerAuthContext
* @see ClientAuthModule
* @see ServerAuthModule
*/
public class MessagePolicy {
private TargetPolicy[] targetPolicies;
private boolean mandatory;
/**
* Create a MessagePolicy instance with an array of target policies.
*
* @param targetPolicies an array of target policies.
*
* @param mandatory A boolean value indicating whether the MessagePolicy is
* mandatory or optional.
*
* @exception IllegalArgumentException if the specified targetPolicies
* is null.
*/
public MessagePolicy(TargetPolicy[] targetPolicies, boolean mandatory) {
if (targetPolicies == null) {
throw new IllegalArgumentException("invalid null targetPolicies");
}
this.targetPolicies = targetPolicies.clone();
this.mandatory = mandatory;
}
/**
* Get the MessagePolicy modifier.
*
* @return A boolean indicating whether the MessagePolicy is
* optional(false) or required(true).
*/
public boolean isMandatory() {
return mandatory;
}
/**
* Get the target policies that comprise the authentication policy.
*
* <p>
*
* @return An array of target authentication policies, where each element
* describes an authentication policy and the parts of the message to which
* the authentication policy applies. This method returns null to indicate
* that no security operations should be performed on the messages to which
* the policy applies. This method never returns a zero-length array.
*
* <p> When this method returns an array of target policies, the
* order of elements in the array represents the order that the
* corresponding message transformations or validations described
* by the target policies are to be performed by the authentication
* module.
*/
public TargetPolicy[] getTargetPolicies() {
return targetPolicies.clone();
}
/**
* This class defines the message protection policies for specific Targets.
*
* <p> This class is used to associate a message protection policy with
* targets within a message. Message targets are represented using
* an implementation of the <i>Target</i> interface matched to the
* message types in MessageInfo. The message protection policy is
* identified by an implementation of the <i>ProtectionPolicy</i>
* interface.
*
* @see ClientAuthModule
* @see ServerAuthModule
*/
public static class TargetPolicy {
private Target[] targets;
private ProtectionPolicy protectionPolicy;
/**
* Create a TargetPolicy instance with an array of Targets
* and with a ProtectionPolicy.
*
* @param targets An array of Targets. This argument may be null.
*
* @param protectionPolicy The object that describes
* the message authentication policy that applies to the
* targets.
*
* @exception IllegalArgumentException if the specified targets
* or protectionPolicy is null.
*/
public TargetPolicy(Target[] targets,
ProtectionPolicy protectionPolicy) {
if (protectionPolicy == null) {
throw new IllegalArgumentException
("invalid null protectionPolicy");
}
if (targets == null || targets.length == 0) {
this.targets = null;
} else {
this.targets = targets.clone();
}
this.protectionPolicy = protectionPolicy;
}
/**
* Get the array of layer-specific target descriptors that identify
* the one or more message parts to which the specified message
* protection policy applies.
*
* @return An array of <i>Target</i> that identify targets
* within a message. This method returns null when the specified policy
* applies to the whole message (excluding any metadata added to the
* message to satisfy the policy). This method never returns a
* zero-length array.
*/
public Target[] getTargets() {
return targets;
}
/**
* Get the ProtectionPolicy that applies to the targets.
*
* @return A ProtectionPolicy object that identifies the
* message authentication requirements that apply to the
* targets.
*/
public ProtectionPolicy getProtectionPolicy() {
return protectionPolicy;
}
}
/**
* This interface is used to represent and perform
* message targeting. Targets are used by message authentication
* modules to operate on the corresponding content within messages.
*
* <p> The internal state of a Target indicates whether it applies
* to the request or response message of a MessageInfo and to which
* components it applies within the identified message.
*/
public static interface Target {
/**
* Get the Object identified by the Target from the MessageInfo.
*
* @param messageInfo The MessageInfo containing the request or
* response message from which the target is to be obtained.
*
* @return An Object representing the target,
* or null when the target could not be found in the MessageInfo.
*/
public Object get(MessageInfo messageInfo);
/**
* Remove the Object identified by the Target from the MessageInfo.
*
* @param messageInfo The MessageInfo containing the request or
* response message from which the target is to be removed.
*/
public void remove(MessageInfo messageInfo);
/**
* Put the Object into the MessageInfo at the location identified
* by the target.
*
* @param messageInfo The MessageInfo containing the request or
* response message into which the object is to be put.
*/
public void put(MessageInfo messageInfo, Object data);
}
/**
* This interface is used to represent message authentication policy.
*
* <p> The internal state of a ProtectionPolicy object defines the
* message authentication requirements to be applied to the associated
* Target.
*/
public static interface ProtectionPolicy {
/**
* The identifer for a ProtectionPolicy that indicates that the
* sending entity is to be authenticated.
*/
public static final String AUTHENTICATE_SENDER =
"#authenticateSender";
/**
* The identifer for a ProtectionPolicy that indicates that the
* origin of data within the message is to be authenticated
* (that is, the message is to be protected such that
* its recipients can establish who defined the message
* content).
*/
public static final String AUTHENTICATE_CONTENT =
"#authenticateContent";
/**
* The identifer for a ProtectionPolicy that indicates that the
* message recipient is to be authenticated.
*/
public static final String AUTHENTICATE_RECIPIENT =
"#authenticateRecipient";
/**
* Get the ProtectionPolicy identifier. An identifier may represent
* a conceptual protection policy (as is the case with the static
* identifiers defined within this interface) or it may identify
* a procedural policy expression or plan that may be more difficult
* to categorize in terms of a conceptual identifier.
*
* @return A String containing a policy identifier. This interface
* defines some policy identifier constants.
* Configuration systems may define and employ other
* policy identifiers values.
*/
public String getID();
}
}
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